参数资料
型号: FP1007R3-R12-R
厂商: Cooper Bussmann
文件页数: 52/56页
文件大小: 0K
描述: INDUCTOR LO PROFLE 120NH 61A SMD
特色产品: FP/HCP Series Inductors
标准包装: 650
系列: FLAT-PAC™, FP1007
电感: 120nH
电流: 61A
电流 - 饱和: 94A
类型: 铁氧体芯体
容差: ±10%
屏蔽: 无屏蔽
DC 电阻(DCR): 0.29 毫欧
材料 - 芯体: 铁氧体
封装/外壳: 0.402" L x 0.307" W x 0.287" H(10.20mm x 7.80mm x 7.30mm)
安装类型: 表面贴装
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
频率 - 测试: 100kHz
Coiltronics ? High Frequency Inductor Catalog
Inductor Selection for Switching Regulators
Inductor Selection: Buck Converters
Inductor Selection: Boost Converters
Switch
Buck
Inductor
Boost
Inductor
Diode
12V
Input
Voltage
Freewheeling
Diode
Output
Cap
5V
Output
Voltage
5V
Input
Voltage
Switch
Output
Cap
12V
Output
Voltage
? L = (8.2 x 0.379/250 x 10 )/0.22
Figure 2:
Buck Inductor Example
Figure 2 Application Parameters:
? Switching frequency= 250kHz
? Input voltage range= 12V±10%
? Max ripple current = 220mA
? Output Voltage= 5.0V
Step 1. Calculate the duty cycle
? Vo = output voltage
? Vi = Max input voltage
? D = Vo / Vi
? D = 5/13.2 = 0.379
Step 2. Calculate the voltage across the inductance
? V1 = Vi-Vo (Switch on)
? V1 = 13.2 - 5 = 8.2V
? V1 = -Vo (Switch off)
? V1 = - Vo = - 5V
Step 3. Calculate the required inductance
? L = Vl.dt/di
3
? L = 56 μ H
Figure 3:
Boost Inductor Example
Figure 3 Application Parameters:
? Switching frequency= 100kHz
? Input voltage range= 4.5-5.5V
? Max ripple current = 100mA
? Output Voltage= 12.0V
Step 1. Calculate the duty cycle:
? Vo= output voltage
? Vi = Max input voltage
? D = 1 - (Vi / Vo)
? D = 1 – (5.5/12.0) = 0.542
Step 2. Calculating the voltage across the inductance
? V1 = Vi (Switch on)
? V1 = 5.5V
? V1 = Vo – Vi (Switch off)
? V1 = 12 – 5.5 = 6.5V
Step 3. Calculating the required inductance
? L = Vl.dt/di
? L= (5.5 x 0.542/100 x 10 3 )/0.1
? L= 298 μ H
Media Players
Typical Applications Using Inductors for Switching Regulators
Industrial Test Equipment
Digital Cameras
Laptop Computers
Backlight Displays
Mobile Phones
52
For product information and data sheets, visit www.cooperbussmann.com/datasheets/elx
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